Governor for explosive-engines.



A. H. KRAFT.

GOVERNOR FOR EXPLOSIVE ENGINES.

APPLICATION FILED APR.2. 191s.

mullqn 2 Patented Aug. (3, 1918.

INVENTOR AUG. H. KRAFT, BY HIS ATTORNEY.

UNITED" ST TES PATENT OFFICE. I

"AUGUST fEI. KRAFT, or ROSEMOUNT, MINNESOTA.

' To all whom it may concern which will automatically maintain an even speed of the explosive engines used on automobiles, tractors, motor boats or for other purposes. Another object is to provide means for readily changing the regulated speed by the operating lever of the engine.

In the accompanying drawing, Figure 1 is a top or plan view of the front portion of an auto-vehicle having an explosive engine equipped with my improved governor of which the arm 27 ,spring and rod 36 are omitted. .Fig. 2 is an enlarged side elevation of the governor and some of the other parts shown in Fig. 1. Fig. 3 is a ,sectionbn the line 33 in Fig. 2. Fig. 4 is a portion of Fig. 1 showing the governor in the position it assumes when rotated ata considerable peed. Fig. 5 is a detail topview of a portion of Fig. 2.

' Referring to the drawing by reference numerals, 1 designates the front portion .of an automobile having a gasolene engine 2,

.with cylinders 3, shaft 4, radiator 5 and a cooling fan 6. The latter is mounted as usually and driven by a belt.

Fixed on the'main engine shaft, or on any other shaft operatively connected with the engine shaft, is a pulley 8 driving by a belt 9 a pulley 10 which is fixed on the governor shaft 11. Said shaft is journaled in boxes -12, which are mounted on the engine by meansv of suitable brackets 13.

The governor proper is composed of said shaft 11, and a'hub 14 fixed thereon, and having two oppositely arranged arms 15 to each of which is pivoted at 16 a lever 17 carrying a weight 18. 19 are two coil springs arranged to normally close the weighted arms 17 against the arms 15 and to yieldingly resist the tendency of the weighted arms to spread by centrifugal force when the governor is rotated. I

The longer arms 17 of the levers 17 are connected by links 29 to a collar 21, which is slidable on thegovernor shaft and resisted Specification of Letters Patent.

* GOVERNOR FOR EXPLOSIV E-ENGINES.

Patented Aug. 6, 1918.

Application fileii April 2, 1918. Serial No. 226,340.

bya spring .22 which is auxiliary to the springs 19.

Mounted in suitable bearings, one of which is shown at 23 in Figfil, is a vertical shaft 24'on which are fixed three radial arms 25,

26, 27 (the latter is omitted in Fig. 1). The

arm 25 is connected by a rod 28 with a crank 29 of a valve 30 in the intake manifold 31 which is partly shown in Fig. 1 as extending up from the carburetor 32. In some makes of engines this connection is direct but in others a bell-crank lever as 33 and link 34 as shown in Fig. 1, may be required.

The arm 26 is a fork straddling the governor shaft 11 and bearing against the collar 21. The third arm, 27, is comparatively short and is connected by contracting coil spring 35 to a rod 36 having a handle 37 near the operator and is provided with teeth 38 adapted to take hold of the lower terminal of a slot 39 in a stationary bracket or like object 40. The spring 35 is arranged in a yoke 41 of the rod and attached with one end at 42 in the yoke and with the other end to a pin 43 in the arm 27. By which arrangement the operator may pull the rod 36 and let such of .its teeth 38 engage as will suitably resist the tendency of the springs 19 and 22 to open the valve 30, or in other words, the farther he pulls the handle 37, the more he aids the governor in spreading itsweights and reducing the speed of the engine, and if he pulls so far that the terminal 44 of the yoke engages the pin 43 a further pulling will cause the governor to spread to its limit and shut off the valve 30, and the engine will stop. And if the greatest possible speed is desired the handle 37 is pushed close to the bracket 40. Thus in going down a hill or on an extra smooth road the engine cannot give the vehicle an undue speed, and when more or less than ordinary speed or force is required the same is obtainable by manipulating the operating rod 36. And where the engine is a stationary one or otherwise operates through the medium of a belt or chain and such connection should break or get out of order the engine will not attain a speed which might cause damage.

What I claim is 1. Ina speed governor for explosive engines, suitable frame work, a shaft mounted therein and operative connection for rotating said shaft by the engine, a collar fixed on the shaft and provided with two opposite radial arms, an angular lever fulcrumed on each-of said arms and having a short arm with a weight on it, and a longer arm With a link at the end of it, a collar slidable on the shaft and connected to said links, springs arranged to normally close the Weighted arms, a shaft mounted near the governor and having'three radial arms, one of said arms acting onthe slidable collar to ,aid the centrifugal force inspreading the weights of the governor, the second arm having operative connection with the gas intake valve of the engine, a spring connected with the third arm and an operating rod connected with said spring, and means for holding the operating rod in different positions so as to vary the tension of the spring. 2. The structure specified in claim 1, and means for rendering the action of the op-' crating rod positive relatlve' to the arm to 20 which it is connected.

In testimony whereof I afiix my signature.

AUGUs'rn. KRAFT. 

